Billboard advertising presents a commanding venue for your company message. Signage is oversized, colorful and difficult to ignore on your daily commute. Traditional billboards consist of vinyl sheets glued to the billboard’s frame, and require high labor costs to install and remove. In contrast, electronic billboards feature colorful moving graphics that can be changed remotely via the Internet. Boards can be shared by several advertisers on a rotating basis, notes Street Authority.
The best way to make your billboard to be more effective is to make it more conspicuous
So you can use some ascenders. Here are some examples: